The T-Bones were an American instrumental rock band active from the mid-1960s to early 1970s. Notably, three of its members, Danny Hamilton, Joe Frank Carollo, and Tommy Reynolds, later formed the soft rock group Hamilton, Joe Frank & Reynolds. The T-Bones are best known for their hit single "No Matter What Shape (Your Stomach's In)", which was based on a popular Alka-Seltzer commercial jingle. Their music, characterized by a distinctive blend of rock and roll with elements of surf music, played a significant role in shaping the instrumental rock genre.